How Spaced Repetition Can Transform Your MRCOG Preparation

If you are preparing for the MRCOG, you are dealing with an enormous volume of material. Fifteen knowledge areas, hundreds of subtopics, thousands of facts and concepts. The natural instinct is to read and re-read, highlighting as you go. But decades of cognitive science research tell us this is one of the least effective study methods. There is a better way, and it is called spaced repetition.

The Forgetting Curve: Why You Forget

In 1885, German psychologist Hermann Ebbinghaus published his research on memory, documenting what he called the "forgetting curve." His findings, which have been replicated hundreds of times since, show that without reinforcement, you forget approximately:

50% within 1 hour of learning something new
70% within 24 hours
90% within 1 week

This is not a flaw in your memory. It is how human memory is designed to work. Your brain aggressively prunes information it does not encounter repeatedly because it assumes that information is not important.

The implication for MRCOG preparation is stark: if you study a topic once and do not revisit it for weeks, you will have forgotten most of it by exam day. This is why candidates who "covered everything" still fail. They covered it, but they did not retain it.

What Is Spaced Repetition?

Spaced repetition is a study technique where you review material at increasing intervals over time. Instead of cramming all your Anatomy revision into one weekend and not touching it again for a month, you review it at day 1, day 3, day 7, day 14, day 30, and so on.

Each time you successfully recall something, the interval before the next review gets longer. Each time you fail to recall it, the interval resets to a shorter period. Over time, the information becomes deeply encoded in long-term memory with minimal ongoing effort.

The key insight is that the optimal moment to review is just before you would forget. Review too early and you are wasting time on material you still know. Review too late and you have to relearn it from scratch. Spaced repetition algorithms find this sweet spot automatically.

How FSRS Works

FSRS (Free Spaced Repetition Scheduler) is the state-of-the-art algorithm used by Anki since version 23.10 and by platforms like MRCOG AI. It was developed by Jarrett Ye and represents a significant improvement over older algorithms like SM-2 (which Anki used for 15+ years).

FSRS models each piece of knowledge using three key parameters:

Stability: How long the memory will last before you forget it. Higher stability means longer intervals between reviews.
Difficulty: How inherently hard this particular item is for you. Some facts are easy for you to remember; others are persistently difficult.
Retrievability: The probability that you can successfully recall this item right now. This decays over time following a power-law forgetting curve.

When you answer a question, FSRS uses your response (correct or incorrect, and how confidently) to update these parameters and calculate when you should next see that question. The algorithm targets a desired retention rate, typically 90%, meaning it schedules reviews so that you have a 90% chance of answering correctly when the review comes up.

Compared to SM-2, FSRS is more accurate at predicting when you will forget and more efficient at scheduling reviews. Studies have shown it achieves the same retention rate with 20-30% fewer reviews, meaning you spend less time studying for the same result.

Why It Is Better Than Cramming

A 2013 study published in Psychological Science compared spaced practice against massed practice (cramming) for medical students learning ECG interpretation. The spaced group outperformed the crammed group by 40% on a test administered one month later, despite spending the same total amount of time studying.

For MRCOG candidates, the evidence is compelling:

Long-term retention: Spaced repetition builds memories that last months, not days. When your exam is 6 months away, you need material studied in month 1 to still be accessible in month 6.
Efficient use of time: You spend time on material you are about to forget, not material you already know. A typical MRCOG candidate using SRS spends 60% of review time on their weakest 20% of topics.
Reduced study burden: The total number of reviews needed to maintain knowledge decreases over time as memories strengthen. What required daily review in week 1 might only need monthly review by month 4.
Active recall: SRS forces you to actively retrieve information rather than passively recognise it. Active recall has been shown to be 50% more effective than re-reading for long-term retention.

How to Use Spaced Repetition for MRCOG

Here is a practical workflow for integrating spaced repetition into your MRCOG preparation:

Step 1: Start Early

The earlier you start using spaced repetition, the more effective it is. Ideally, begin 6 months before your exam. If you start with only 2 months to go, spaced repetition still helps, but you will not get the full benefit of long-interval reviews.

Step 2: Do New Questions in the Morning

Each morning, answer a batch of new questions from your target topic. When you get a question wrong, it enters your spaced repetition queue. When you get it right, it is scheduled for a future review with a longer interval.

Step 3: Do Reviews in the Evening

Each evening, work through your due reviews. These are questions you previously answered that are now scheduled for review. Some will be from yesterday, some from last week, some from last month. The algorithm has determined that now is the optimal time to test your recall.

Step 4: Be Honest About Difficulty

When a spaced repetition system asks how hard a question was, be honest. If you got it right but had to think for 2 minutes and were not confident, rate it as "Hard." If you knew the answer instantly, rate it as "Easy." The algorithm uses this information to adjust your scheduling. Overrating your confidence leads to longer intervals and eventually forgotten material.

Step 5: Trust the Process

In the first few weeks, spaced repetition can feel slower than brute-force studying. You are seeing fewer new questions because you are spending time on reviews. This is normal and correct. By month 3, your review burden plateaus and you can increase your new question rate while maintaining everything you have already learned.

Daily Review Habits

A sustainable daily routine for MRCOG preparation using spaced repetition:

Morning (30-45 min): 15-20 new questions from your target topic for the day
Evening (20-30 min): All due spaced repetition reviews (typically 15-30 cards by month 3)
Weekend (2-3 hours): Extended study session with a focus on weak areas identified by your analytics

The total daily commitment is about 1 hour on weekdays and 2-3 hours on weekends. This is sustainable alongside a clinical training job. Consistency matters far more than marathon sessions: studying 1 hour every day for 6 months is dramatically more effective than studying 6 hours every weekend for 6 months.

The Bottom Line

Spaced repetition is not a shortcut. It is the most time-efficient path to genuine, lasting knowledge. For an exam like MRCOG Part 1 that covers 15 knowledge areas and demands recall of hundreds of facts and concepts, it is the difference between information that sticks and information that fades.

The 56% of US medical students who use Anki daily have figured this out. The question is whether you will bring the same evidence-based approach to your MRCOG preparation.